_File _valid _verbose addFile addName AttrMap AttrMapType CharacterCount Characters characters clearPartialRestoreDocumentObject clearPartialRestoreObject clearPartialRestoreProperty DocumentSchema doNameMapping endCDATA endDocument endElement error fatalError FileList FileNames FileVersion getAttribute getAttributeAsFloat getAttributeAsInteger getAttributeAsUnsigned getAttributeCount getFileInfo getFilenames getName hasAttribute ignorableWhitespace isRegistered isValid isVerbose Level level localName LocalName nameMap parser ProgramVersion read readBinFile readCharacters readElement readEndElement ReaderStatus readFile readFiles readNextElement ReadType resetDocument resetErrors setPartialRestore setStatus setVerbose startCDATA startDocument startElement StatusBits testStatus token warning XMLReader ~XMLReader

isValid() bool isValid ( ) const 检查 XML 文件是否有效 返回 XML 文件是否成功加载且格式正确的标志。 返回 如果 XML 文件有效，返回 true；否则返回 false。